Improved forge-bonnet



To all whom it may. concern i vention.

time can.

WALTER DUNKERLno'F WooNsocKET, RHODE ISLAND.

`Letters Patent No. 103,160, dated 'Mag/'11, 1870.

:Menovnn FORGE-nonnen.

The Schedule referred toizrthes Lettera Patent and making partlof thesama Bc it known that I, WALTER' DUNKERLY, of'- Woonsocket, inthe-county of Providence and State of' Rhode Island, have invented a newand4 valuable Improvementin Forge-Bonnets and I do hereby declare thatthe following is" a full, clear, and exact 4description of the'construction and operation of the same,

reference being had to theannexed drawings making a part of thisspecification', andl to the letters and tig- `ures of` reference markedthereon.

Figure 1 of' the drawings is a front view ot'- my in- 1 Figure 2 is acentral vertical cross-section thereof'. M y invention relates to meansfor increasing the heat and cconomizing coal ina blacksmiths forge, andcon'-, sist'sln the construction of a bell-shaped bonnet linedwithfire-ciay, designedto be placed upon thev forge directly overthetweer. r

The letter A of the drawings represents the forgebonnet made ofcast-iron` and lined with tire-clay, b. It is, in-shape, a cylinder,surmounted by a cone, but its horizontal sections areelliptical, the'longest diaml eter being in the linepf the doors c and d, through twhich the articles to be heated are introduced. These doors slidevertically.

E -designates thefecding-door, through which coals `are passed. Y

h represents a damper designed to prevent the escape ot' heat, whennecessary. `The bonnet may be used either with or without a ehimney.`When the forge is provided 'With a chimney, the bonnet as abovedescribed is complete for use,

but when there is no chimney, the sheet-iron pipel l is used to conveyo' the products of combustion. v At its lower end, just above thedamper, the sheet.-

iron pipe is provided with an inverted funnel or cone@ shaped collar,It, designed-to gather the gases and smoke when the damper is closed,and to convey them off through the draught-openings z z. v i With thisbonnet an iron bar can be heated quickly and with great uniformity. Lesscoal isnecessary to accomplish-the work, and there is no waste. With thebonnet a certain degree ot'neatness is possible about a forge, which`cannot be obtained without it. The lire-claylining serves to retain theheat, and, 'at

the same time, -t-o prevent the cast-iron body ot the bonnet fromv beingquickly burned out. i

' What I claim as my inventiolnand desire to securel by Letters Patent,is-

1. 'The forge-bonnet herein described, lined with tire-clay or othersuitable material, and provided with Athe feeding-door E, sliding doorsc and (l, and damper h, as speclied. A I A 2. In combination witlt'theconical cast-iron forge;r bonnet A, having feeding-door E, sliding doorsc and d, and damper h., the sheet-ironfpipe Z, having conical collar k,and draught-openings z z, substantially as shown and described.

In testimonythat I claim the above, I have hereunto subscribed'my namein the presence of two witnesses.

VWitnesses:

. WALTER DUNKERLT.

GEORGE A.W1I.Bon, r

C. H. FLETCHER.

